Kev kho cua sov saum npoo tau muab faib ua ob pawg: ib qho yog qhov chaw quenching thiab tempering kub kho, thiab lwm yam yog tshuaj kho cua sov.Txoj kev kuaj hardness yog raws li nram no:
1. nto quenching thiab tempering kub kho
Deg quenching thiab tempering tshav kub kev kho mob feem ntau yog ua los ntawm induction cua sov los yog nplaim hluav taws kub.Lub ntsiab technical parameters yog deg hardness, lub zos hardness thiab zoo hardened txheej tob.Vickers hardness tester lossis Rockwell hardness tester tuaj yeem siv rau kev sim hardness.Kev sim quab yuam Kev xaiv yog muaj feem xyuam rau qhov tob ntawm cov txheej txheem hardened zoo thiab qhov hardness ntawm lub workpiece.Muaj peb lub tshuab hardness koom nrog ntawm no.
(1) Vickers hardness tester yog ib qho tseem ceeb rau kev ntsuam xyuas qhov tawv tawv ntawm cov khoom siv cua sov.Nws tuaj yeem siv qhov kev sim quab yuam ntawm 0.5-100KG los kuaj cov txheej txheej tawv tawv li nyias li 0.05mm tuab.Nws qhov tseeb yog qhov siab thiab nws tuaj yeem paub qhov txawv ntawm cov khoom ua haujlwm kub-kho.Qhov sib txawv me ntsis ntawm qhov tawv tawv, ntxiv rau, qhov tob ntawm cov txheej txheem hardened tseem raug kuaj pom los ntawm Vickers hardness tester, yog li nws yog ib qho tsim nyog yuav tsum tau nruab Vickers hardness tester rau chav tsev uas ua cov txheej txheem kev kho cua sov los yog siv ntau tus neeg. ntawm nto tshav kub kho workpieces.
(2) Lub nto Rockwell hardness tester kuj yog qhov tsim nyog rau kev sim qhov hardness ntawm qhov quenched workpiece.Muaj peb teev rau saum npoo Rockwell hardness tester xaiv los ntawm.Nws tuaj yeem kuaj ntau qhov chaw ua haujlwm tawv tawv uas nws cov txheej txheem hardened zoo tshaj 0.1 hli.Txawm hais tias qhov tseeb ntawm qhov chaw Rockwell hardness tester tsis yog siab npaum li Vickers hardness tester, nws tuaj yeem ua tau raws li qhov yuav tsum tau ua raws li txoj kev tshawb nrhiav rau kev tswj kom zoo thiab kev soj ntsuam ntawm cov nroj tsuag kho cua sov..Ntawm no, nws kuj muaj cov yam ntxwv ntawm kev ua haujlwm yooj yim, kev siv yooj yim, tus nqi qis, kev ntsuas ceev, thiab kev nyeem ncaj qha ntawm hardness qhov tseem ceeb.Lub nto Rockwell hardness tester tuaj yeem siv tau sai thiab tsis muaj kev puas tsuaj rau cov khoom ntawm cov khoom siv hluav taws xob los ntawm ib qho.Nws yog ib qho tseem ceeb heev rau cov hlau ua thiab machinery manufacturing factories.Thaum cov txheej txheem cua sov ua kom tawv tawv yog tuab, Rockwell hardness tester kuj tseem siv tau.Thaum tshav kub kho hardness txheej thickness yog 0.4-0.8 hli, HRA nplai yuav siv tau.Thaum lub hardened txheej tob Thaum nws tshaj 0.8 hli, HRC nplai yuav siv tau.Vickers, Rockwell thiab superficial Rockwell peb hardness standard values tau yooj yim hloov dua siab tshiab rau hauv ib leeg, hloov mus rau hauv cov qauv, kos duab los yog hardness qhov tseem ceeb yuav tsum tau los ntawm cov neeg siv, thiab cov ntaub ntawv hloov dua siab tshiab yog nyob rau hauv lub thoob ntiaj teb standard ISO.American standard ASTM thiab Suav standard GB / T tau muab.
(3) Thaum lub thickness ntawm lub tshav kub-kho hardened txheej yog ntau tshaj 0.2 hli, ib tug Leeb hardness tester yuav siv tau, tab sis ib tug C-hom sensor yuav tsum tau xaiv.Thaum ntsuas, yuav tsum tau them nyiaj mloog mus rau qhov chaw tiav thiab tag nrho cov thickness ntawm lub workpiece.Txoj kev ntsuas no tsis muaj Vickers thiab Rockwell Lub hardness tester yog qhov tseeb, tab sis nws tsim nyog rau kev ntsuas ntawm qhov chaw hauv lub hoobkas.
2. tshuaj kho cua sov
Tshuaj kho cua sov yog infiltrate nto ntawm lub workpiece nrog atoms ntawm ib los yog ob peb yam tshuaj, yog li hloov cov tshuaj muaj pes tsawg leeg, qauv thiab kev ua tau zoo ntawm cov nto ntawm lub workpiece.Tom qab quenching thiab tsis kub tempering, nto ntawm lub workpiece muaj siab hardness thiab hnav tsis kam.thiab tiv taus qaug zog, thiab cov tub ntxhais ntawm lub workpiece muaj lub zog siab thiab toughness.Cov txheej txheem tseem ceeb ntawm cov tshuaj siv hluav taws xob kho cua sov ua haujlwm yog qhov tob ntawm txheej tawv tawv thiab qhov tawv tawv.Qhov kev ncua deb ntawm qhov hardness poob mus rau 50HRC yog qhov zoo hardened txheej tob.Kev ntsuam xyuas qhov tawv tawv ntawm cov tshuaj siv hluav taws xob kho cov khoom siv hluav taws xob zoo ib yam li kev sim hardness ntawm qhov chaw quenched tshav kub kho workpieces.Vickers hardness testers, nto Rockwell hardness testers lossis Rockwell hardness testers tuaj yeem siv.Hardness tester kom paub, tsuas yog lub thickness ntawm nitriding thicker yog nyias, feem ntau tsis ntau tshaj 0.7 hli, ces tus Rockwell hardness tester yuav siv tsis tau.
3. Kev kho cua sov hauv zos
Yog tias qhov chaw kho cua sov hauv zos yuav tsum muaj qhov nyuaj hauv zos, kev kho cua sov hauv zos tuaj yeem nqa tawm los ntawm kev siv cua sov induction, thiab lwm yam. Cov khoom no feem ntau yuav tsum tau kos npe rau txoj hauj lwm ntawm lub zos quenching tshav kub kev kho mob thiab lub zos hardness nqi ntawm daim duab, thiab hardness. Kev ntsuam xyuas ntawm cov khoom yuav tsum tau ua nyob rau hauv lub cheeb tsam, lub hardness testing ntsuas yuav siv tau ib tug Rockwell hardness tester los kuaj HRC hardness nqi.Yog tias qhov kev kho cua sov ua kom tawv tawv yog qhov ntiav, lub ntsej muag Rockwell hardness tester tuaj yeem siv los kuaj tus nqi HRN hardness.
Post lub sij hawm: Feb-22-2023
